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Chapter 9
| General Security Measures
DHCPv4 Snooping
show ip dhcp
snooping
show ip dhcp
snooping binding
This command shows the DHCP snooping configuration settings.
Command Mode
Privileged Exec
Example
Console#show ip dhcp snooping
Global DHCP Snooping Status: disabled
DHCP Snooping Information Option Status: disabled
DHCP Snooping Information Option Sub-option Format: extra subtype included
DHCP Snooping Information Option Remote ID: MAC Address (hex encoded)
DHCP Snooping Information Policy: replace
DHCP Snooping is configured on the following VLANs:
Verify Source MAC-Address: enabled
DHCP Snooping Rate Limit: unlimited
Interface
Trusted
----------
-------
Eth 1/1
No
Eth 1/2
No
Eth 1/3
No
Eth 1/4
No
Eth 1/5
No
.
.
.
This command shows the DHCP snooping binding table entries.
Command Mode
Privileged Exec
Example
Console#show ip dhcp snooping binding
MAC Address
IP Address
----------------- --------------- ---------- -------------------- ---- ---------
11-22-33-44-55-66 192.168.0.99
Console#
Max-Number
Circuit-ID mode
----------
---------------
16
VLAN-Unit-Port
16
VLAN-Unit-Port
16
VLAN-Unit-Port
16
VLAN-Unit-Port
16
VLAN-Unit-Port
Lease(sec) Type
0 Dynamic-DHCPSNP
– 320 –
Circuit-ID Value
-----------------
---
---
---
---
---
VLAN Interface
1 Eth 1/5
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